Height: 2"/50.8mm, Dia. 0.97"/24.638mm. Height accuracy 0/+0.0002". Repeatability, ยฑ 0.000039". IP67 protection. Carbide touch surface (0.196"/5mm). High precision bearing guide system for long life. Interchangeable magnetic base. High visibility LED indicator. Movement stroke 0.078"/2mm. Trigger force: 54-188-150-0, 1.3N (4.6 oz./130g). Operation temperature +5 DegreeC to 50 DegreeC (40 DegreeF to 120 DegreeF). Uses 2, 1.5V batteries (SR44 or LR44). Battery life approximately 250 hours (on time).